The Sievi SieviAir R4 Safety Trainer combines cutting-edge protection with industry-leading comfort technology. Featuring the BOA® Fit System mounted at the side for effortless fastening, this trainer delivers a secure, micro-adjustable fit.

The FlexEnergy® shock-absorbing heel returns over 55% of energy back to the wearer, reducing fatigue during long shifts. Unique to Sievi, the SieviAir® sole system channels and dissipates perspiration through special ducts, keeping your feet cooler and more comfortable.

Equipped with an aluminium toecap, steel penetration-resistant midsole, and certified to EN ISO 20345: S1P SRC ESD, the SieviAir R4 is the ideal choice for workers who demand both high performance and long-lasting comfort.

Key Features:

BOA® Fit System: Fast, precise and easy closure at the side
FlexEnergy® Heel: Stores kinetic energy and returns over 55%
SieviAir® Sole System: Actively dissipates perspiration for cooler feet
Aluminium Toecap: Lightweight impact protection
Steel Midsole: Reliable underfoot penetration resistance
Durable Sole: Single density PU construction
Safety Standard: EN ISO 20345: S1P SRC ESD
Size Range: 35 – 48

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Sievi SieviAir R4 Safety Trainer – BOA® Fit, FlexEnergy®, S1P SRC ESD